Fwd: [Bug 827538] DVB USB device firmware requested in module_init()

[Antti Palosaari <crope@xxxxxx>]

-------- Original Message --------
Subject: [Bug 827538] DVB USB device firmware requested in module_init()
Date: Fri, 01 Jun 2012 19:44:17 +0000
From: bugzilla@xxxxxxxxxx
To: crope@xxxxxx

https://bugzilla.redhat.com/show_bug.cgi?id=827538

Kay Sievers <kay@xxxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gansalmon@xxxxxxxxx,
                   |                            |itamar@xxxxxxxxxxxxxxxx,
                   |                            |kernel-maint@xxxxxxxxxx,
                   |                            |madhu.chinakonda@xxxxxxxxx
          Component|udev                        |kernel
           Assignee|udev-maint@xxxxxxxxxx       |kernel-maint@xxxxxxxxxx
            Summary|DVB USB device firmware     |DVB USB device firmware
                   |downloading takes 30        |requested in module_init()
                   |seconds                     |

--- Comment #1 from Kay Sievers <kay@xxxxxxxxxx> ---
This is very likely a kernel driver issue.

Drivers must not load firmware in the module_init() path, or device
probe()/bind() path. This creates a deadlock in the event handling.

We used to silently try to work around that, but recently started
to log this error explicitely.

The firmware should in general be requested asynchronously, or at the first
open() of the device.

Details are here:
  http://thread.gmane.org/gmane.linux.network/217729

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